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Photophysical properties of poly(triptycene vinylene) derivatives and effect of nitrotoluene exposure

Jean-Pierre Malval, Isabelle Leray; Chem. Phys. Lett., 501 (2010), 54-58.

The photophysical properties of two conjugated polymers containing triptycene group were studied. These systems are highly fluorescent and time-resolved fluorescent measurements show that there are different types of excited species whose relative population is correlated to a heterogeneous collection of chromophore sites. A fluorescence quenching is observed upon DNT exposure because of a dynamic electron transfer process from the polymer to the quencher. The reversibility of the quenching process has been demonstrated by a simple air flow method which allows the re-use of the sensor for cycling measurement of the nitroaromatic analyte.

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Paru le 6 décembre 2010

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DOI: 10.1016/j.cplett.2010.10.036